Dishwashing machine



I Nov. 24, 1936. J. A. PANOS ET AL DISHWASHING MACHINE Filed July 5,1935 ENTOR EEJEEEIQEMZJIZ] and ATTORNEY.

Patented Nov. 24, 1936 PATENT OFFICE DISHWASHING MACHINE James A. Panosand Samuel D. Christie,

Los Angeles, Calif.

Application July 5, 1935, Serial No. 29,946

3 Claims.

This invention relates to and has for an object the provision of a dishwashing machine adapted to be constructed as a stationary structure oras an accessory to an ordinary duplex sink such as are used inrestaurants and the like for washing and rinsing dishes. Our inventionembodies two separate units, one for washing and one for rinsing dishes,or a unit for either of said purposes, and includes a receptacle ofsuflicient capacity, a source of supply for hot and cold water, a trayor basket removably held in the receptacle and a motor driven impellerat least partially submerged in the water or liquid and arranged toforcibly direct a cleansing or rinsing fluid upon dishes held in thetray or basket and to cause and maintain a circulation of the fluid inthe receptacle'so as to render it unnecessary to individually scour thedishes.

Thus, when separate and contiguous cleansing and rinsing units are usedthe baskets containing the dishes may be transferred from the cleansingunit to the rinsing unit in large or small quantities depending upon thenecessities of an occasion. 7

An important object is to provide a. simple, effective and economicalmechanism which requires a minimum number of parts and a minimum ofhandling and particularly, to eliminate the necessity of handling eachindividual dish in a washing operation. Other objects of invention willappear in the description hereinafter following.

We have shown a preferred form of device, in the accompanying drawings,subject to modification, within the scope of the appended claims,

without departing from the spirit of our invention.

In said drawing:

Fig. 1 is a perspective view of a dish washing machine constructed as aduplex unit for washing and rinsing dishes;

Fig. 2 is a section of the same'on line 2-2 of Fig.1;

Fig. 3 is a top plan view of our apparatus.

Briefly described, our improved apparatus includes: a suitable frame Iconstructed with sheet metal drain boards 2, and 3, a splash board 4 anda front 5 so formed as to enclose and support a pair of sinks 6 and 1.Corresponding sides 8 and 9 of said sinks are provided with arcuatelyformed upper portions III which are concentric with impellers I I, II,arranged at a side, in each case, of the respective sinks 6 and 1 withtheir peripheries below the level of the associated drain boards 2 and 3so as to be partially, at least. submerged in the liquid contained insaid sinks.

Intermediate the sinks 6 and 'I a section I2 is provided which'overliesthe impeller. II of the sink I, as shown in Fig. 2, while the drainboard 2 6 similarly overlies the impeller provided in sink 6.. Hot andcold water are fed from pipes I3 and I4 and the supply thereof iscontrolled by means of usual faucets I5 and I6, respectively, which areconnected with a central swing pipe I'I arranged to be swung intoposition for supplying water of a desired temperature to either of thesinks 6 or 1'.

Drain pipes I8 are provided at the bottoms of the sinks 6 and I and areconnected with overflow pipes, as at I9 which are extended upwardly asuitable distance in the sinks and are, together with drains I8,connected with a, common waste pipe 20 which may lead to.a sewerconnection. Each sink has'a gas or electric burner 2| mounted therebelowfor the purpose of maintaining the cleansing solution and rinsing waterat a substantially uniform temperature, as shown in Fig. 2.

The dishes D are adapted to be held in loose formation in perviousbaskets B preferably 2 formed of wire mesh and provided with handles 22by means of which the dish laden baskets may be carried to, deposited inand removed from the sinks 6 and 1. As shown in Figs. 2 and 3, thedishes D are preferably arranged edgewise in the baskets B so that theiredges are disposed adjacent the impellers II and theturbulence of thesolution in which the dishes are held serves to wash the matter from thedishes.

Each impeller II is mounted on a transverse 35 shaft 23 suitablyjournalled on the frame I and has a plurality of radial blades 24 which,when the impellers are rotated in a counter-clockwise direction, asshown in Fig. 2, operate to throw the water or cleansing solutionoutwardly upon 4p. and between the dishes D while the water or solutionis drawn upwardly from points beneath the surface of the solution,thereby creating sufficient turbulence in the sinks to thoroughlycleanse the dishes.

Preferably, though not necessarily, the impellers II are operated byseparate motors M which may be arranged, as shown in Fig. 2,-on brackets25 extended from the frame I. Motors M are connected by any suitab:means with impellers I I, such as belts 26 oper ting over drivingpulleys 21 attached to the motor shafts and pulleys 28 attached to theends of impeller shafts 23.

The operation of the mechanism is obvious,

inasmuch as the impellers when rotated by the motors M create aturbulence in the cleansing solution of sink 6, for instance, and in therinsing water of sink I, which directs the water or solution forciblyagainst and between the dishes D, thereby causing the removal of thegrease and particles of food while the dishes are held in the baskets B.

When sufliciently cleansed a tray or basket B with its dishes is removedfrom the cleansing receptacle 6 and deposited in the rinsing receptacleI and subjected to a similar turbulence of the water for removing thecleansing agents from the dishes. Thus, the dishes are not individuallyhandled except as required for properly positioning the dishes in thebaskets, and a washing operation may be continuously performed withbetter results and less expense and greater speed than with machines ofother well known types.

What we claim as new and desire to secure by Letters Patent, is:

1. A dish washing machine comprising: a frame having a splash boardforming a back, shelves at the ends thereof extending forwardly of saidback, a vertical partition intermediate said shelves, end walls adjacentthe inner ends of said shelves and a front, providing a pair of similarreceptacles for a cleaning solution and water, respectively, a rotatableimpeller mounted on a transverse horizontal axis andsupported atcorresponding ends of each of said receptacles and in the upper portionsthereof so as to be partially submerged in the liquid, said receptaclesbeing adapted to support dishes edgewise therein so that during therotation of said impellers the liquid will be discharged forcibly uponand between said dishes, and means for operating said impellers.

2. A dish washing machine comprising: a frame having a splash boardforming a back, shelves at the ends thereof extending forwardly of saidback, a vertical partition intermediate said shelves, end walls adjacentthe inner ends of said shelves and a front, providing a pair of similar.receptacles for a cleaning solution and water, respectively, a rotatableimpeller mounted on a transverse horizontal axis and supported atcorresponding ends of each of saidreceptacles and in the upper portionsthereof so as to be partially submerged in the liquid, said receptaclesbeing adapted to support dishes edgewise therein so that during therotation of said impellers the liquid will be discharged forcibly uponand'between said dishes, means for operating said impellers, and meansfor maintaining a normal level of liquid in said receptacles.

3. A dish washing machine comprising: a frame having a splash boardforming a back, shelves at the ends thereof extending forwardly of saidback, a vertical partition intermediate said shelves, end walls adjacentthe inner ends of said shelves and a front, providing a pair of similarreceptacles for a cleaning solution and water, respectively, a rotatableimpeller mounted on a transverse horizontal axis and supported atcorresponding ends of each of said receptacles and in the upper portionsthereof so as to be partially submerged in the liquid, said receptaclesbeing adapted to support dishes edgewise therein so that during therotation of said impellers the liquid will be discharged forcibly uponand between said dishes, means for operating said impellers, and meansfor heating the liquid in said receptacles.

JAMES A. PANOS. SAMUEL D. CHRIS'I'E.

